When we first moved in I discovered a pesky thorny vine sprouting up all over the yard. The exterminator called it “heart shaped briar”, but I couldn’t find any online references to such a vine in Texas that matched what I was seeing. Some more searching brought up Sawbriar, which certainly fits with the sharp thorns along the vine. It also has tendrils which help it entangle the trees and other sawbriar vines. When they all gang together they form a scratchy nearly impenetrable mass that is very difficult to clear. I tried to dig up the root node, to make sure the thing didn’t sprout again, and after digging down over a foot on the first one, I settled for cutting the stem off at ground level at every opportunity. I’ve mostly cleared the large grabbing vines from my paths, and I recently picked up a long handled weeder that does a good job breaking the stems at ground level. I’ve adopted the weeder as my walking stick.

Sawbriar spreads by runners and seeds. The birds eat the berries faster than I can find them, and thus continue the spread. I have found that when I cut them at ground level, and leave them to die for a season, the vines are more brittle and easier to break down. Still as sharp, though.

These things are everywhere, grab at your legs and basically make a nuisance of themselves.